The Tesla car involved in a fatal crash in Florida this spring was in autopilot mode and going about 10 miles faster than the speed limit [“Autopilot was on in crash,” News, July 27].

This news was disturbing. Either the system did not know or obey the speed limit, or the human in the car was allowed to override it and violate the law.

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Neither situation makes sense. An autopilot logically needs to obey all traffic laws to be safe, or else it should not be trusted. This kind of potential failure makes me dubious about the future of autopilot driving.

Bruce Gaugler, Port Jefferson Station